TMI: SO laughing on ejaculation, anyone else

My FI has this week encountered something that has happened sporadically in the past (warning: explicit content following): upon ejaculation with contact (vaginal or hand or other), he has such extreme sensitivity, that it tickles him and he laughs uncontrollably. It tickles so much that it actually interferes with the completion of the act. It is kind of hilarious, from my perspective, but only to a degree.

It happened twice in a row with “normal” vaginal sex, so we tested it out tonight with a blowy ending with hand contact and it was the same. Extreme ticklish sensitivity.